TY  - RPRT
TI  - Skin lesions on black ducks and mallards caused by chigger (Wormsia strandtmani Wharton 1947)
AU  - G. M. Clark
AU  - Vernon D. Stotts
PY  - 1960
DO  - 10.2307/3797371
UR  - https://pubs.usgs.gov/publication/5220718
ID  - 5220718
ER  -